g(α)=∫6π3π(sinαx+cosαx)sinαxdx…(i)
g(α)=∫6π3π(sinαx+cosαx)cosαxdx…(ii)
Adding (1)+(2)
2g(α)=3π−6π=6π
⇒g(α)=12π
Which is constant and an even function.
JEE Main 2021 — Mathematics Calculus
Which of the following statement is correct for the function g(α) for α∈R such that g(α)=∫6π3πcosαx+sinαxsinαxdx
Held on 17 Mar 2021 · Verified 6 Jul 2026.
g(α) is a strictly increasing function
g(α) has an inflection point at α=−21
g(α) is a strictly decreasing function
g(α) is an even function
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